cmLocalVisualStudio7Generator: Adopt SourcesVisited lookup table

Move it up the hierarchy from `cmLocalVisualStudio10Generator`.
Propagate contents from a target's dependencies as part of the main
target iteration logic instead of as part of the generator-specific
target generation.

Source/cmLocalVisualStudio10Generator.cxx

@@ -68,13 +68,6 @@ cmLocalVisualStudio10Generator::~cmLocalVisualStudio10Generator()
 
 void cmLocalVisualStudio10Generator::GenerateTarget(cmGeneratorTarget* target)
 {
-  auto& targetVisited = this->GetSourcesVisited(target);
-  auto& deps = this->GlobalGenerator->GetTargetDirectDepends(target);
-  for (auto& d : deps) {
-    // Take the union of visited source files of custom commands
-    auto depVisited = this->GetSourcesVisited(d);
-    targetVisited.insert(depVisited.begin(), depVisited.end());
-  }
   if (static_cast<cmGlobalVisualStudioGenerator*>(this->GlobalGenerator)
         ->TargetIsFortranOnly(target)) {
     this->cmLocalVisualStudio7Generator::GenerateTarget(target);

Source/cmLocalVisualStudio10Generator.h

@@ -28,19 +28,10 @@ public:
   void ReadAndStoreExternalGUID(const std::string& name,
                                 const char* path) override;
 
-  std::set<cmSourceFile const*>& GetSourcesVisited(
-    cmGeneratorTarget const* target)
-  {
-    return SourcesVisited[target];
-  };
-
 protected:
   const char* ReportErrorLabel() const override;
   bool CustomCommandUseLocal() const override { return true; }
 
 private:
   void GenerateTarget(cmGeneratorTarget* target) override;
-
-  std::map<cmGeneratorTarget const*, std::set<cmSourceFile const*>>
-    SourcesVisited;
 };

Source/cmLocalVisualStudio7Generator.cxx

@@ -86,6 +86,15 @@ void cmLocalVisualStudio7Generator::Generate()
     if (!gt->IsInBuildSystem() || gt->GetProperty("EXTERNAL_MSPROJECT")) {
       continue;
     }
+
+    auto& gtVisited = this->GetSourcesVisited(gt);
+    auto& deps = this->GlobalGenerator->GetTargetDirectDepends(gt);
+    for (auto& d : deps) {
+      // Take the union of visited source files of custom commands
+      auto depVisited = this->GetSourcesVisited(d);
+      gtVisited.insert(depVisited.begin(), depVisited.end());
+    }
+
     this->GenerateTarget(gt);
   }
 

Source/cmLocalVisualStudio7Generator.h

@@ -83,6 +83,12 @@ public:
   virtual void ReadAndStoreExternalGUID(const std::string& name,
                                         const char* path);
 
+  std::set<cmSourceFile const*>& GetSourcesVisited(
+    cmGeneratorTarget const* target)
+  {
+    return this->SourcesVisited[target];
+  };
+
 protected:
   virtual void GenerateTarget(cmGeneratorTarget* target);
 
@@ -148,4 +154,7 @@ private:
   bool FortranProject;
   bool WindowsCEProject;
   std::unique_ptr<cmLocalVisualStudio7GeneratorInternals> Internal;
+
+  std::map<cmGeneratorTarget const*, std::set<cmSourceFile const*>>
+    SourcesVisited;
 };